Valve with diaphragm valving element



Sept. 16, 1969 1. a. RATELBAND 3,467,l3l

VALVE WITH DIAPHRAGM VALVING ELEMENT Filed March 17, 1967 2 Sheets-Sheetl INVENTO JHANNES l RATELBMD SePL 16, 1969 .1.5. RATELBAND 3,46'M3lVALVE WITH DIAPHHAGM VALVING ELEMENT Filed March 17, 1967 2 Sheetswiheet2 INVENTOR JOHANNES B. RATEL BAND BY j ATTORNEYS United States PatentOce Patented Sept. 16, 1969 3,467,131 VALVE WITH DIAPHRAGM VALVINGELEMENT Johannes B. Ratelband, Jan de Jagerlaan 1, Laag Keppel,Netherlands Filed Mar. 17, 1967, Ser. No. 623,859 Claims priority,application Netherlands, Mar. 30, 1966, 6604164 Int. Cl. F16k 3 7/165U.S. Cl. 137-269 3 Claims ABSTRACT F THE DISCLOSURE The housing of thevaluve is provided with an insert forming a partition between the inowside and the outow side of the housing and at its circumference mergesin an annular wall. Said wall at least at one side of the partition isconstituted by bars extending in axial direction and projecting -withone of their ends into a ring of elastic material provided at thecircumference of the partition. Said bars at their other end beingsupported in the adjacent end wall of the housing and flow passagesbeing formed between said bars. The annular wall of the partition issurrounded by a sleeve-like diaphragm which at both ends is secured inthe housing. At the outer side of the diaphagm a chamber is formed inwhich pressure uid may be admitted for urging the diaphragm on theannular wall.

This invention relates to a valve the housing of -which is provided`with an insert forming a partition between the inflow side and theoutow side in the housing and at its circumference merges in an annularwall having on either side of the partition ow passages and beingsurrounded by a sleeve-like diaphragm which at both ends is secured inthe housing and on the outer side of which a chamber is formed in whichpressure fluid may be admitted as has been described in my U.S. Patent2,818,880.

With said known valve the annular -wall of the insert extending on bothsides of the partition constitutes an integral body with the partitionand axial ribs are provided at the inner side of the annular wall andthe flow passages extend unto said ribs. With said construction of theinsert the passages are `obtained by removing material of the insertdown to the ribs, but said construction has the drawback that itrequires muchlabour and well rounded edges at the passages particularlyat the inner side of the annular wall of the insert cannot be obtained.

The invention has for its object to improve said known valve andaccording to the invention the annular wall of the insert at least atone side of the partition is constituted by bars extending in axialdirection and projecting with one of their ends into a ring of elasticmaterial provided at the circumference of the partition and said bars attheir other end being supported in the adjacent end wall of the housing.As said bars do not require any working the manufacture of the insert isvery simple and moreover the advantage is obtained that by adding orremoving bars the passage area of the insert can be modified at will. Asthe bars may have a circular section no sharp edges are formed at theslots obtained between the bars, so that the flow conditions at theslots are very favourable. For the material of the bars not only metalbut also a chemically resistant synthetic material may be used.

With a suitable embodiment of the valve according to the invention thepartition is hollow and each side wall of the partition is united withthe adjacent end piece of the housing an dthe elastic circumferentialring of the partition is clamped between-the side walls thereof.

The invention will be further described with reference to theaccompanying drawing, showing three embodidrawing FIG. 1 is alongitudinal section of a valve according to the invention in closedposition and FIG. 2 is a cross-sectional view of the valve taken on lineII-II in FIG. 1.

FIGS. 3 and 4 each show half a longitudinal section of a valve accordingto a second and third embodiment respectively.

The housing of the valve consists of two end parts 11', and a more orless cylindrical intermediate part 2 and said parts being clampedtogether by clamping bolts 3 distributed along the circumference of thecasing. The casing contains an insert constituting a partition betweenthe inflow side and the outflow side of the casing and being provided atboth sides with an annular Wall. Said partition consists of two halves4, 4 which with the embodiment shown in FIGS. 1 and 2 each are united byribs 5, 5 with the adjacent end part 1, 1 of the housing. The bolts 3also serve to secure a diaphragm 7 in the housing and to this end thediaphragm is provided with flanges 8. A pressure uid is supplied to theouter side of the diaphragm 7 through one or more holes 9 whereby thediaphragm is forced inwards.

With the embodiment shown in FIGS. 1 and 2 the partition formed by thehalves 4, 4 is embraced by an elastic ring 10 e.g. `of rubber and beingclamped with the inwards projecting rim 11 between the halves 4, 4' alsoby the bolts 3. Bars '13 are inserted in circular recesses 12 at bothside faces of the ring 10 and the other ends of said bars are supportedin the recesses of ring 14 also consisting of elastic material e.g.rubber. The rings 14 are placed on a shoulder 15 of the adjacent endpart 1 of the casing.

With the embodiment shown in FIG. 3 the bars 13 at the outflow side ofthe partition in the end part 1a' are united with adjacent half 4a ofthe partition. At the inow side of the partition 4a in the end part 1aseveral bars 13 are supported in the elastic circumferential ring 10 ofthe partition and the remaining bars 16' here also are united with theadjacent half 4a of the partition, so that they extend through the ring10. Between both halves 4a, 4a' of the partition a sealing ring 16 isprovided.

With the embodiment shown in FIG. 4 both halves 4a, 4a of the partitionbet-Ween the end parts 1a, 1a are embraced by an elastic circumferentialring 10' in which at least certain of the bars 13 arranged at both sidesof the partition are supported and the remaining bars 13 united withadjacent half 4a, 4a of the partition extend through the ring 10.

Both with the embodiment shown in FIG. 3 and that shown in FIG. 4 theclamping bolts 3 are located at the outer side of the intermediate part2 of the housing.

In closed position of the valve as shown in the drawing the middle partof the diaphragm 7 is seated on the outer circumference of the elasticring or rings 10', whereby an efficient seal of the diaphragm on theinsert in closed position of the valve is secured.

What I claim is:

1. A valve comprising a housing which is provided with an insert forminga partition between the inflow side and the outflow side of the housingand at its circumference merges in an annular wall having on either sideof the partition ow passages and being surrounded by a sleeve-likeflexible diaphragm which at both ends is secured in the housing, theouter side of said diaphragm defining a wall of an expansible chamber inwhich pressure uid may be admitted to control the 4ilexing of saiddiaphragm and thereby control uid ow through said passages, the annularwall of the insert at least at one side of the partition beingconstituted by bars defining said passages and extending in an axialdirection and projecting with one of their ends into a ring of elasticmaterial provided at the circumference of the partition and said bars attheir other end being supported in the adjacent end wall of the housing,at least some bars being removably mounted.

2. A valve as claimed in claim 1 wherein said partition is hollow andcomprises abutting partition walls, and each side wall of the partitionis united lwith the adjacent end piece of the housing and the elasticcircumferential ring of the partition is clamped between said abuttingpartition walls.

3. A valve as claimed in claim 1 wherein certain of the bars at least atone side of the partition are united with said partition as a unitarystructure.

4 References Cited UNITED STATES PATENTS 11/1947 Strike 251-258 XR 1/1958 Ratelband 251-5 XR FOREIGN PATENTS 6/ 1949 Italy.

U.S. C1. XJR.

